Housing · O'Fallon
O'Fallon, IL housing market
The typical O'Fallon home is worth about $316,000, up 2.5% in a year, 6% above the Illinois typical home.
Home values, sales, trends and how O'Fallon compares with the towns next door — updated as new data is published.
The market right now
O'Fallon at a glance
Typical home value
$316K
▲ 2.5% in a year · Zillow
Ten-year trend
Typical home value, 2016–2026
O'FallonIllinois
Show as a table
| January | O'Fallon | Illinois |
|---|---|---|
| 2017 | $193,000 | $181,000 |
| 2018 | $206,000 | $190,000 |
| 2019 | $212,000 | $195,000 |
| 2020 | $210,000 | $200,000 |
| 2021 | $232,000 | $215,000 |
| 2022 | $262,000 | $236,000 |
| 2023 | $277,000 | $248,000 |
| 2024 | $291,000 | $263,000 |
| 2025 | $301,000 | $278,000 |
| 2026 | $313,000 | $290,000 |
| August 2026 | $316,000 | $298,000 |
Nearby
O'Fallon and its neighbors
The towns that share a border. Tap one to see its housing page.
| Town | Typical value | 1-yr change | Days on market | Median income |
|---|---|---|---|---|
| O'Fallon | $316K | +2.5% | — | $100,136 |
| Caseyville | $114K | −3.1% | — | $87,204 |
| O'Fallon | — | — | 37 | $105,982 |
| Lebanon | $177K | −2.3% | — | $89,615 |
| Shiloh | $319K | +2% | 38 | $99,573 |
Affordability
3.2 years of income
The typical O'Fallon home costs about 3.2 years of the town's median household income, less than across Illinois (3.6 years).
How O'Fallon ranks on affordability →
Home value ÷ ACS median household income.
The homes
Owners, rent & taxes
Homeownership
74.2%
Illinois: 67.1%
Median tax bill
$5,696
Illinois: $5,298
Median rent
$1,153
Illinois: $1,274
Typical home built
1992
Illinois: 1971
U.S. Census Bureau, ACS 2020-2024.
Home values: Zillow Home Value Index (ZHVI), Zillow Research, August 2026. Sales, days on market and supply: Redfin Data Center. Income, ownership, taxes and rent: U.S. Census Bureau, American Community Survey. Listings link to their publishers.